PAH and mid-infrared luminosities as measures of star formation rate in Spitzer first look survey galaxies
文献类型：期刊论文
| 作者 | Wu, H ; Cao, C; Hao, CN; Liu, FS; Wang, JL; Xia, XY; Deng, ZG; Young, CKS
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2005-10-20 |
| 卷号 | 632期号:2页码:L79-L82 |
| 关键词 | galaxies : starburst infrared : galaxies stars : formation |
| 英文摘要 | We present evidence that the 8 mm (dust) and 24 mm luminosities of star-forming galaxies are both strongly correlated with their 1.4 GHz and H alpha luminosities over a range in luminosity of 2-3 orders of magnitude. At the bright end, the correlations are found to be essentially linear over a luminosity range of about 2 orders of magnitude (corresponding to star formation rates of several tenths to several tens of solar masses per year). However, at the faint end there appears to be a slope change for dwarf galaxies, possibly due to the lower dust-to-gas ratios and lower metallicities of the dwarfs. The correlations suggest that PAH features and mid-IR continuum emissions are good measures of the star formation rates of galaxies, and we present calibrations of star formation rates based on existing radio and Ha relations. Our findings are based on a sample of star-forming galaxies selected from the main field of the Spitzer First Look Survey with the aid of spectroscopic data from the Sloan Digital Sky Survey and VLA 1.4 GHz data. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000232569400006 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/7013]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Tianjin Normal Univ, Dept Phys, Tianjin 300074, Peoples R China 3.Chinese Acad Sci, Grad Sch, Coll Phys Sci, Beijing 100039, Peoples R China 4.Univ Hong Kong, Dept Phys, Hong Kong, Hong Kong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, H,Cao, C,Hao, CN,et al. PAH and mid-infrared luminosities as measures of star formation rate in Spitzer first look survey galaxies[J]. ASTROPHYSICAL JOURNAL,2005,632(2):L79-L82. |
| APA | Wu, H.,Cao, C.,Hao, CN.,Liu, FS.,Wang, JL.,...&Young, CKS.(2005).PAH and mid-infrared luminosities as measures of star formation rate in Spitzer first look survey galaxies.ASTROPHYSICAL JOURNAL,632(2),L79-L82. |
| MLA | Wu, H,et al."PAH and mid-infrared luminosities as measures of star formation rate in Spitzer first look survey galaxies".ASTROPHYSICAL JOURNAL 632.2(2005):L79-L82. |
入库方式： OAI收割
来源：国家天文台
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